Rotary motor.



No, 767,20*?.V BATENTBD AUG. 9, 1901:..V

` M. M. GONGBB..

- ROTARY MOTOR. Alf'PLVIoA'rIoN IILED sum1. 1903.

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NO MODEL.

. ATTORNEYS UNITED STATES Patented August 9, 1904.

ATBNT OFFICE..

ROTARY MOTOR.

SPECIFICATION forming part of Letters Patent No. 767,207, dated August9, 1904.

l Application filed September l, 1903. Serial No. 171,481. (No model.)

To L7/Z whom, t may concern.'

Be it known that I, MILTON MARSHALL OoN- GER, a citizen of the UnitedStates, and a resident of Linneus, in the county of Linn and State ofMissouri, have invented a new and Improved Rotary Motor, of which thefollowing is a full, clear, and exact description.

The object of the invention is to provide a rotary motor of an improvedtype characterized by increased efciency and avery simple constructionrequiring a minimum amount of attention.

My improved motor embodies a rotary piston provided with valves or wingswhich are pressed outward by the steam and during a portion of theirtravel act against inclined surfaces on the case, giving a turbineaction, the outward thrust against the inclines serving by the force ofreaction to move the piston forward. The direct action of the motiveagent is also utilized effectively against the pistonvalves, and whenthe valves reach the point of farthest projection beyond the peripheryof the body of the piston steam is admitted to their outer faces tobalance the pressure and reduce to a minimum the work required to bedone by the motive agent in the forcing of the said valves inward.

The invention will be more particularly described hereinafter and thendened in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specication, in which similar characters Ofreference indicatecorresponding parts in both the figures.

Figure l represents a vertical section of a motor embodying myinvention, the section being taken on the line l l of Fig. 2; and Fig.

and partitioned,forming the central live-steam chamber D andexhaust-chambers E E at the sides of and also extending below thelivesteam compartment. The inlet Z or supplypipe leads to the chamber Dand the outlet e leads from the exhaust-chamber at the bottom of theengine. The chamber D terminates just below the horizontal center of thecase and inlet-ports Dl lead therefrom at opposite sides to the workingchamber O", said inletports being provided with the abutment-valves F F.The exhaust-chambers E E communicate with the working chamber O4 by asuitable number of exhaust-ports e e2 at each side adjacent to theabutment-valves F F. The interior of the casing is oblong and the pistonis in general triangular in shape, having three curved sides, the wingsor valves A' A2 A3 being located at the angles. With the valves A A2 A3thus disposed at one hundred and twenty degrees from each other and theabutment-valves at diametrically Opposite points in the casing theworking chamber O2 will at no time be exposed wholly to exhaustconditions. The interior surface of the casing, it will be observed, iscomposed of diiferent curves, there being short curves o c' at the sidesadjacent to the abutmentvalves F F and extending to points l0, fromwhich points to the opposite inlet-port the surface o2 02 is in the formof a longer curve eccentric to the iirst-named curves and which when aside ofthe piston is opposite forms with the latter a crescent-shapedspace in to and across which the vvalves A A2 A3 are successivelyprojected. In the curved surfaces o o/ depressions o3 are produced,forming steam-channels.

The valves or wings A A2 A3 are hollowed out at one side, as at c, toform steam-chambers between the same and the walls of the pockets o, inwhich said valves are iitted, and leading to said steam-spaces from theworking chamber O2 are channels or ports b'. The abutment-valves F F aresimilarly made hollow, as at ff, and the faces or front surfaces.

of the abutment-valves are concaved to a conformity with the curved`front faces of the valves A A2 A2.

The motor having been started by moving the piston yto bring a Valvethereof suiiiciently past an abutment-valve to admit steam-as,

IOO

for instance, just beyond the position of thc valve at the left of Fig'.lvstcani will be admitted from the back of the abutment-valve and act toturn the piston A in the direction of the arrow. Then the valve has passed the point l0, the valve will be thrust outward against the curvedsurface c2 bythe steam beneath the valve, and from the point lO to aboutthe point l5 the said valve acts against the curve ci as an inclinedplane, the reaction tending to move the piston around. Until the point15' or thereabout is reached it will be observed the valve contacts byits rear outer corner a, so that no live steam is admitted to its outerface. IVben, however, the point l5 is passed, the reverse conditiontakes place in order that the thrust outward against the outward inclinemay not be neutralized by the inward incline from the point l5 to thenext abutmen t-valve, F. Thus after each valve A A A3 has passed thepoint l5 its forward edge a? will be in contact with the curved surfaceci, as is seen by the position of the valve Az at the right of Fig. 1,whereby live steam is admitted to the outer face of the valve to balancethe pressure beneath and permit the valve to move inward without thematerial expenditure of energy. It will therefore be seen that the steamacts directly against the wings or valves and indirectly by reaction orturbine effect due to the thrust of the valves against the inclinedplanes from the points l0 to 15. It will also be clear that theabutments are subject only to the outward pressure of the steam or othermotive agent behind them when being' forced outward, while when beingpressed inward the live steam acts on the outer faces of said valves tobalance the pressure thereon, as will appear from a comparison of therelative positions of the said abutmentvalves. Furthermore, by my formof casing and piston and the special arrangement of wings andabutment-valves the motive agent will be used expansively during a largeportion of the travel of the piston. rIhus, taking the positions of wingA and abutment F, (at the left of Fig. 1,) steam is about to beadn'iitted through the said abutment; but it will be cut off before thewing A reaches the point 15, and in the further travel of the said wingto the next exhaust-port a the wing will be under the influence of theexpansive action of the steam. During the movement of the wing' A underthe expansive action of the steam the abutment F will be moved to theinner position bythe opposed curved side of the piston.

Having thus described my invention, I claim as new and desire to secureby Letters Patent4 1. In a rotary motor acasing havinga working chamberand valve-controlled inlet-ports and suitable exhaust-ports, the surfaceof the chamber presenting curves adjacent to the inlet-ports, and longercurves beyond and adjacent to the first-named curves and presentingoutward and inward inclines, and a rotary piston having sliding valves,the said valves being subject at their backs to the action of the livesteam, to force them outward against the mentioned outward inclines ofthe casing whereby to tend to force the piston forward, the smallercurved surfaces of the casing having channels therein.

2. In a rotary motor, the combination of a casing havingvalve-controlled inlets, and a rotary piston having a plurality of sideswhich form with the casing, a series of steam-spaces, the said pistonhaving movable wings or valves adapted to be projected into said spaces,and

the sides of the piston serving to act on the valves of the inlets andcut off the steam during a portion of the travel of the Wings. the frontfaces of the valves of the piston being curved to correspond With thecurved outer faces of the inlet-valves.

3. In a rotary motor, a casing having an oblong working chamber formedwith inletports controlled by opposite abutment-valves and withexhaust-ports, and a rotary piston of general triangular shape havingWings or valves at the ang'les, the valves being movable in inward andoutward directions and subject at the backs thereof to the action of themotive agent in the Working chamber.

4L. In a rotary motor, a casing having' a working chamber, andvalve-controlled inletports and suitable exhaust-ports, the surface ofthe chamber presenting curves adjacent to the inlet-ports, and longercurves beyond and eccentric to the first-named curves, and a rotarypiston of general triangular shape having sliding valves located at theangles of the piston; and subject at their backs to the action of themotive agent in the Working chamber.

5. In a rotary motor, a casing having a working chamberand'valve-controlled inletports and suitable exhaust-ports, the surfaceof the chamber presenting curves adjacent to the inlet-ports, and longercurves beyond and eccentric to the first-named curves, and a rotarypiston having sliding Valves subject at their backs to the action of themotive agent in the working chamber; the piston be ing of generaltriangular shape and the valves thereof being arranged at the angles.

6. In a rotary motor, a casing having a working chamber andvalve-controlled inletports and suitable exhaust-ports, the surface ofthe chamber presenting curves adjacent to the inlet-ports, and longercurves beyond and eccentric to the first-named curves, and a rotarypiston. having sliding valves subject at their backs to the action ofthe motive agent in the Working chamber; the firstnamed curves of thecasing having channels therein.

7. In a rotary motor, a casing having a working chamber and inner andouter Walls forming a steam-space outside the working chamber, saidouter space being divided into TO the periphery and movable in inwardand outward directions to follow the surface of the working chamber.

In testimony whereof I have signed my name to this specification in thepresence of two subseribing witnesses.

MILTON MARSHALL CONGER. i

Witnesses:

S. W. FURNAs, GEORGE W. WRIGHT.

